Ubuntu
systemd package

  1. Bug #1576536
  2. Comment #12

Comment 12 for bug 1576536

Revision history for this message
Pheeble (enpheebled-git) wrote :

This seems to be a problem with any systemd timer that contains a 'RandomizedDelaySec' value in the [Timer] section. Multiple randomization adjustments to a timer will often occur in quick succession, sometimes simultaneously, and for no purpose that I can see.

Perhaps systemd timers need a flag to indicate that timer randomization has already occurred since the relevant service was last run, so don't do it again.

This is the result of 'journalctl -b | grep "random time"' covering just the first hour after booting Xubuntu 16.04.1 this morning:

Nov 03 05:02:18 Phil-Desktop systemd[1]: hosts_append.timer: Adding 14.771780s random time.
Nov 03 05:02:18 Phil-Desktop systemd[1]: emachine-mount-nfs.timer: Adding 3.905842s random time.
Nov 03 05:02:18 Phil-Desktop systemd[1]: apt-daily.timer: Adding 11h 10min 46.989419s random time.
Nov 03 05:02:18 Phil-Desktop systemd[1]: send_boot_notify.timer: Adding 12.437715s random time.
Nov 03 05:02:18 Phil-Desktop systemd[1]: send_apt_upgrades_list.timer: Adding 41min 20.509782s random time.
Nov 03 05:02:18 Phil-Desktop systemd[1]: send_journald_log_list.timer: Adding 3min 48.321721s random time.
Nov 03 05:02:19 Phil-Desktop systemd[1]: send_apt_upgrades_list.timer: Adding 2min 53.039364s random time.
Nov 03 05:02:19 Phil-Desktop systemd[1]: send_journald_log_list.timer: Adding 9min 39.120834s random time.
Nov 03 05:02:19 Phil-Desktop systemd[1]: send_boot_notify.timer: Adding 649.932ms random time.
Nov 03 05:02:19 Phil-Desktop systemd[1]: apt-daily.timer: Adding 10h 36min 12.532296s random time.
Nov 03 05:02:19 Phil-Desktop systemd[1]: hosts_append.timer: Adding 4.994423s random time.
Nov 03 05:03:39 Phil-Desktop systemd[1]: apt-daily.timer: Adding 4h 53min 16.440349s random time.
Nov 03 05:03:39 Phil-Desktop systemd[1]: apt-daily.timer: Adding 8h 44min 23.219990s random time.
Nov 03 06:03:45 Phil-Desktop systemd[1]: send_apt_upgrades_list.timer: Adding 55min 558.055ms random time.
Nov 03 06:03:45 Phil-Desktop systemd[1]: send_apt_upgrades_list.timer: Adding 25min 6.210969s random time.